// ===========================================================================
//	LorenzChaos.java	1996 Yushin Hozumi All rights reserved.
//							Author:Yushin Hozumi
// ===========================================================================

package	StudioRAIN.chaos;

import StudioRAIN.geometry.*;
import StudioRAIN.chaos.*;

public class LorenzChaos implements ChaosGenerator2D
{
	float a, b;
	
	public LorenzChaos( float inA, float inB )
	{
		a = inA;
		b = inB;
	}

	public Vector2D transform( Vector2D inVector )
	{
		float theX = inVector.getX();
		float theY = inVector.getY();

		return new Vector2D
		(
			( 1.0F + a * b ) * theX - b * theX * theY,
			( 1.0F - b ) * theY + b * theX * theX
		);
	}

	public String getScript()
	{
		return 
			"x(n+1) = ( 1 + ( " + Float.toString( a ) + " ) * ( " + Float.toString( b ) + " ) ) * x(n) - ( " + Float.toString( b ) + " ) * x(n) * y(n)\n" +
			"y(n+1) = ( 1 - ( " + Float.toString( b ) + " ) ) * y(n) + ( " + Float.toString( b ) + " ) * x(n) * x(n)\n";
	}

//	public Vector2D getScale() { return new Vector2D( 40.0F, 40.0F ); }
}